Explanation

Nitrogen gas (N₂) has a triple covalent bond between the two nitrogen atoms.

This triple bond makes N₂ very stable and unreactive under normal conditions.

Explanation

A 100% yield means the actual yield equals the theoretical yield, indicating an ideal reaction.

Explanation

Methanol (CH₃OH) is polar due to the presence of the highly electronegative –OH group and its bent geometry.

Other molecules like CO₂ and CCl₄ are non-polar because of their symmetrical shape, despite having polar bonds.

Explanation

The catalyst in Friedel-Crafts alkylation is AlCl3 (aluminum chloride).

Explanation

The percentage of a sample of HBr decomposes at 430 °C. is 0.1.

Explanation

Carboxylic acids with long hydrocarbon chains are called fatty acids.

Explanation

: CsCl has a body-centered cubic (bcc) structure, where each Cs⁺ ion is surrounded by 8 Cl⁻ ions and vice versa.

Explanation

Let the two charges be:

• $+q$ at one end

• $-q$ at the other end

• Distance between them = $2d$

• Midpoint = distance $d$ from both charges

The electric potential at a point due to a charge:

V= kq/r​

So, at the midpoint:

• Potential due to $+q$: +kq/ d​

• Potential due to $-q$: $-frac{kq}{d}$

Vnet​=kq/d​−kq​/d=0

Explanation

The molar heat of vaporization for water is 40.7 kJ/mol, which is the energy required to vaporize one mole of water.

Explanation

Ammonia has a pH level of around 11-12, which is strongly alkaline (basic).